Most people synchronize email, calendars, contacts, and even tasks with their mobile devices and their service provider. This allows them to see all of the same information on their computers and while on the go.
There are essentially three ways that synchronizing mobile devices discover updates and changes to contacts, new email messages, etc. On my iPhone, these are represented in the “Fetch New Data” settings area as
- Push – where the server informs the device that there are updates waiting
- Pull / Fetch – where the device checks periodically for changes
- Manual – the device checks only when you request it